I have never worked as a medical assistant, so I can't speak to that, but I wanted to suggest that you maybe consider nursing as a career option. I am an RN and now working as a nurse educator. It is a wonderful profession that will offer you a lot more options than MA. If you already have a batchelor's degree, there are lots of "express" programs opening up that allow you to get your BSN in just over a year (though it is an intense program!) Another option is to get an associate's degree which usually takes about 2 years. After getting your ASN, you can work and go back to school PT for your BSN. I would definitely recommend becoming an RN not an LPN. LPN's are more limited in their scope of practice and many institutions do not even hire LPN's anymore. (Plus, the pay is definitely better for RN's). RN's are professionals that can work in all different types of settings (hospital, doctor's office, school, nursing home, etc.) and work different shifts/hours which can be helpful when you have little ones at home. For example, you could work nights or weekends so you are working when hubby is home. Some places offer increased compensation for your degree (so you would make more as a BSN than an ASN). As far as personality traits, I think if you are considering any profession in healthcare you probably have the right personality traits for nursing. Nurses are generally caring individuals who like working with people. Patience is definitely a virtue when working as a nurse.
Good luck in whatever you decide!